interrupter

/ˌɪn.təˈrʌp.tɚ/
noun
  1. A person who stops someone from speaking or doing something by saying or doing something else.
    • The teacher asked the interrupter to raise his hand next time.
    • She was known as a frequent interrupter during meetings.
    • The comedian turned the heckler into an interrupter of his own jokes.
  2. A device or mechanism that breaks an electrical circuit or stops a signal.
    • The circuit uses an interrupter to prevent overloads.
    • The old telegraph had a simple interrupter for sending Morse code.
    • An interrupter switch cut the power when the machine overheated.
Antonyms
What does "interrupter" mean? | whatsthatwordmean | whatsthatwordmean